Difference between revisions of "Design Flow Rate (rainwater drainage)"
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Design flow rate (l/s) = Effective Catchment Area (m.sq.) x Rainfall Intensity (mm/hr) / 3600 | Design flow rate (l/s) = Effective Catchment Area (m.sq.) x Rainfall Intensity (mm/hr) / 3600 | ||
| − | The method of calculating Effective catchment areas can be referred to [[Catchment area]]. | + | The method of calculating Effective catchment areas can be referred to [[Catchment area (effective) (roof drainage)]]. |
== References: == | == References: == | ||
# BS EN 12056-3:2000 | # BS EN 12056-3:2000 | ||
Revision as of 12:41, 2 May 2017
In the context of rainwater drainage, the computation of design flow rate can be categorised into the following:
- Effective plan catchment
- Elevation catchment (for wind driven rain)
Design flow rate (l/s) = Effective Catchment Area (m.sq.) x Rainfall Intensity (mm/hr) / 3600
The method of calculating Effective catchment areas can be referred to Catchment area (effective) (roof drainage).
References:
- BS EN 12056-3:2000
